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T
Tourette Syndrome

Tourette Syndrome (TS) is a neurological disorder characterized by tics -- involuntary,
rapid, sudden movements or vocalizations that occur repeatedly in the same way.
Diagnostic criteria include:
  • Both multiple motor and one or more vocal tics present at some time, although not
    necessarily simultaneously;

  • The occurrence of tics many times a day (usually in bouts) nearly every day or
    intermittently throughout the span of more than one year;

  • Periodic changes in the number, frequency, type and location of the tics, and in
    the waxing and waning of their severity. Symptoms can sometimes disappear for
    weeks or months at a time;

  • Onset before the age of 18.